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Both core and comparative texts may be used throughout your course of study. Though it may seem that the differences are few and possibly inconsequential they are there for a reason.

Core texts are...

The general formula for when a acid reacts with a salt (sodium) is that a salt and hydrogen is produced. This should be learnt off by heart!

So, our acid is Hydrochloric acid, and when this reacts ...

So before we understand this we need to quickly explain homeostasis. This is essentially the process by which the body maintains a constant internal environment. Our external environment changes all the t...

There are four main types of river erosion. You can have hydraulic action, attrition, abrasion and solution. 

Hydraulic action is the power that the water has to simply break away bits of the river...

In arteries, the main structural difference is the thickness of the arterial wall, due to an increased amount of smooth muscle, arteries have much thicker walls than both veins and capillaries to ensure t...